What are some of the worst habits you've seen in food courts?

a lot of people aren't concerned with their cleanliness, which is important. when you think about it, you sit at a table that has been wiped down using a rag that has wiped all the other tables.... they don't get a clean one every time. so basically they just wipe crumbs away and are transferring germs. not all places do this, some use cleaning sprays and paper towels but not all. Then, on these dirty table people pu their forks down, which they then put in their mouth